![]() ![]() ![]() Here's something the germans did in WW2 to work with the 元1 suppressor for the MP40, it's a heavier weight bullet with a similar form factor, but a rather noticeable tail sticking out the back. When you're dealing with subsonic bullets, you're not dealing with any nose pressure drag (shock-wave) as such your drag function becomes a function of the surface area that's exposed to the air stream. Your chances of a KB are fairly low, but bullets stuck in the barrel is kinda've a day ruining problem, and it's worse if you don't notice it. One reason why I'm leery of doing this is because when putting long bullets into a barrel like this, you start getting into territory where it's really easy to stick a bullet in the barrel. Is it possible your occasional "pop" is just FRP? However, "for fun" I'm looking at a lot of other variables I totally get the "for fun" aspect of it. Go down to the other range, and accuracy falls apart at about 800 yards. 223 loadings (168's and 69's) as the bullets stay supersonic past that range. At the higher range, it's easy to make 1000 yard shots with pretty marginal. There are two local ranges near me that go out to 1000 yards, one is at about 2500 feet, the other is at 4900ft. The inverse square law applies well to sound, however in the PNW with it's cooler, wetter, and hence denser atmosphere sound carries better, and also because of the higher density the speed of sound is lower. Three things happen with a longer barrel, first you can get parasitic drag when there isn't enough pressure to sustain the velocity and friction takes over, the second when this happens you're beyond the thermodynamic curve of the gas and as the bullet rushes out the muzzle you're pulling the pressure down, which means you're cooling the gasses, and finally, you're moving the rapport of the gun further away from the shooter. 300BLK you're probably at $35/100 just for the big bullets. ![]() 300BLK, and all of the other "big bore subsonics" there just isn't enough performance left to really justify using it over a pistol-caliber sub gun. In a lot of ways, this is kinda why I lost interest in the. It sounds like banging on a 2x4 with a hammer nearly universally. In my experimentation, most of the time, when shooting suppressed even with really quiet bolt actions, most of the "noise" from shooting was actually the bullet striking the target, whether steel, or even wood, or a rubber backstop. Dropping velocity further just means less hitting power on the target. 30 cal by shooting subsonic with a short barrel. You've already lost most of the punching advantage of a. If you really want super-quiet, get an adjustable gas system and turn it off, or get another can. There is a correlation between velocity and sound, but it's not necessarily causation. I guess I don't really understand why you would do this. Possible that people only go as low as they can load with the suppressor BEING OFF the firearm so that they know they can fire reliably Minus the suppressor?Īnd it's still louder that I was hoping for Not Chrono'd yet but cycles and Bolt stays open on last round.Īm I missing something important? I have not seen anybody online indicate such low powder charges for this weight and powder. And I'm not going to list all the numbers below that I chrono'd. Reprocessed 300 Brass from multiple headstampsĩ" SBR with Saker 762 Mounted ON (except typically the first round to make sure I'm not keyholing) Using published data for starting point (high end) which is different than my standard Low End rule. ![]() So I've been trying to find the bottom end on this 300 blackout subsonic load. ![]()
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